Find recipes for Raspberry Vinaigrette and other Course recipes. Get all the best recipes at . Recipe directions: In a large saucepan, bring the preserves and 3/4 cup sugar to a boil. Remove from the heat; cool slightly. Transfer to a blender. Add the water, onion, vinegar, tarragon, curry powder, white pepper, pepper and remaining sugar; cover and process until smooth. While processing, gradually add oil in a steady stream. Serve with salad greens.